This source file includes following definitions.
- fsl_dcu_drm_plane_index
- fsl_dcu_drm_plane_atomic_check
- fsl_dcu_drm_plane_atomic_disable
- fsl_dcu_drm_plane_atomic_update
- fsl_dcu_drm_plane_destroy
- fsl_dcu_drm_init_planes
- fsl_dcu_drm_primary_create_plane
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8 #include <linux/regmap.h>
9
10 #include <drm/drm_atomic_helper.h>
11 #include <drm/drm_crtc.h>
12 #include <drm/drm_fb_cma_helper.h>
13 #include <drm/drm_fourcc.h>
14 #include <drm/drm_gem_cma_helper.h>
15 #include <drm/drm_plane_helper.h>
16 #include <drm/drm_probe_helper.h>
17
18 #include "fsl_dcu_drm_drv.h"
19 #include "fsl_dcu_drm_plane.h"
20
21 static int fsl_dcu_drm_plane_index(struct drm_plane *plane)
22 {
23 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
24 unsigned int total_layer = fsl_dev->soc->total_layer;
25 unsigned int index;
26
27 index = drm_plane_index(plane);
28 if (index < total_layer)
29 return total_layer - index - 1;
30
31 dev_err(fsl_dev->dev, "No more layer left\n");
32 return -EINVAL;
33 }
34
35 static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
36 struct drm_plane_state *state)
37 {
38 struct drm_framebuffer *fb = state->fb;
39
40 if (!state->fb || !state->crtc)
41 return 0;
42
43 switch (fb->format->format) {
44 case DRM_FORMAT_RGB565:
45 case DRM_FORMAT_RGB888:
46 case DRM_FORMAT_XRGB8888:
47 case DRM_FORMAT_ARGB8888:
48 case DRM_FORMAT_XRGB4444:
49 case DRM_FORMAT_ARGB4444:
50 case DRM_FORMAT_XRGB1555:
51 case DRM_FORMAT_ARGB1555:
52 case DRM_FORMAT_YUV422:
53 return 0;
54 default:
55 return -EINVAL;
56 }
57 }
58
59 static void fsl_dcu_drm_plane_atomic_disable(struct drm_plane *plane,
60 struct drm_plane_state *old_state)
61 {
62 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
63 unsigned int value;
64 int index;
65
66 index = fsl_dcu_drm_plane_index(plane);
67 if (index < 0)
68 return;
69
70 regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), &value);
71 value &= ~DCU_LAYER_EN;
72 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), value);
73 }
74
75 static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
76 struct drm_plane_state *old_state)
77
78 {
79 struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
80 struct drm_plane_state *state = plane->state;
81 struct drm_framebuffer *fb = plane->state->fb;
82 struct drm_gem_cma_object *gem;
83 unsigned int alpha = DCU_LAYER_AB_NONE, bpp;
84 int index;
85
86 if (!fb)
87 return;
88
89 index = fsl_dcu_drm_plane_index(plane);
90 if (index < 0)
91 return;
92
93 gem = drm_fb_cma_get_gem_obj(fb, 0);
94
95 switch (fb->format->format) {
96 case DRM_FORMAT_RGB565:
97 bpp = FSL_DCU_RGB565;
98 break;
99 case DRM_FORMAT_RGB888:
100 bpp = FSL_DCU_RGB888;
101 break;
102 case DRM_FORMAT_ARGB8888:
103 alpha = DCU_LAYER_AB_WHOLE_FRAME;
104
105 case DRM_FORMAT_XRGB8888:
106 bpp = FSL_DCU_ARGB8888;
107 break;
108 case DRM_FORMAT_ARGB4444:
109 alpha = DCU_LAYER_AB_WHOLE_FRAME;
110
111 case DRM_FORMAT_XRGB4444:
112 bpp = FSL_DCU_ARGB4444;
113 break;
114 case DRM_FORMAT_ARGB1555:
115 alpha = DCU_LAYER_AB_WHOLE_FRAME;
116
117 case DRM_FORMAT_XRGB1555:
118 bpp = FSL_DCU_ARGB1555;
119 break;
120 case DRM_FORMAT_YUV422:
121 bpp = FSL_DCU_YUV422;
122 break;
123 default:
124 return;
125 }
126
127 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1),
128 DCU_LAYER_HEIGHT(state->crtc_h) |
129 DCU_LAYER_WIDTH(state->crtc_w));
130 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2),
131 DCU_LAYER_POSY(state->crtc_y) |
132 DCU_LAYER_POSX(state->crtc_x));
133 regmap_write(fsl_dev->regmap,
134 DCU_CTRLDESCLN(index, 3), gem->paddr);
135 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4),
136 DCU_LAYER_EN |
137 DCU_LAYER_TRANS(0xff) |
138 DCU_LAYER_BPP(bpp) |
139 alpha);
140 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 5),
141 DCU_LAYER_CKMAX_R(0xFF) |
142 DCU_LAYER_CKMAX_G(0xFF) |
143 DCU_LAYER_CKMAX_B(0xFF));
144 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 6),
145 DCU_LAYER_CKMIN_R(0) |
146 DCU_LAYER_CKMIN_G(0) |
147 DCU_LAYER_CKMIN_B(0));
148 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 7), 0);
149 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 8),
150 DCU_LAYER_FG_FCOLOR(0));
151 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 9),
152 DCU_LAYER_BG_BCOLOR(0));
153
154 if (!strcmp(fsl_dev->soc->name, "ls1021a")) {
155 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 10),
156 DCU_LAYER_POST_SKIP(0) |
157 DCU_LAYER_PRE_SKIP(0));
158 }
159
160 return;
161 }
162
163 static const struct drm_plane_helper_funcs fsl_dcu_drm_plane_helper_funcs = {
164 .atomic_check = fsl_dcu_drm_plane_atomic_check,
165 .atomic_disable = fsl_dcu_drm_plane_atomic_disable,
166 .atomic_update = fsl_dcu_drm_plane_atomic_update,
167 };
168
169 static void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
170 {
171 drm_plane_cleanup(plane);
172 kfree(plane);
173 }
174
175 static const struct drm_plane_funcs fsl_dcu_drm_plane_funcs = {
176 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
177 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
178 .destroy = fsl_dcu_drm_plane_destroy,
179 .disable_plane = drm_atomic_helper_disable_plane,
180 .reset = drm_atomic_helper_plane_reset,
181 .update_plane = drm_atomic_helper_update_plane,
182 };
183
184 static const u32 fsl_dcu_drm_plane_formats[] = {
185 DRM_FORMAT_RGB565,
186 DRM_FORMAT_RGB888,
187 DRM_FORMAT_XRGB8888,
188 DRM_FORMAT_ARGB8888,
189 DRM_FORMAT_XRGB4444,
190 DRM_FORMAT_ARGB4444,
191 DRM_FORMAT_XRGB1555,
192 DRM_FORMAT_ARGB1555,
193 DRM_FORMAT_YUV422,
194 };
195
196 void fsl_dcu_drm_init_planes(struct drm_device *dev)
197 {
198 struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
199 int i, j;
200
201 for (i = 0; i < fsl_dev->soc->total_layer; i++) {
202 for (j = 1; j <= fsl_dev->soc->layer_regs; j++)
203 regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0);
204 }
205 }
206
207 struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
208 {
209 struct drm_plane *primary;
210 int ret;
211
212 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
213 if (!primary) {
214 DRM_DEBUG_KMS("Failed to allocate primary plane\n");
215 return NULL;
216 }
217
218
219 ret = drm_universal_plane_init(dev, primary, 0,
220 &fsl_dcu_drm_plane_funcs,
221 fsl_dcu_drm_plane_formats,
222 ARRAY_SIZE(fsl_dcu_drm_plane_formats),
223 NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
224 if (ret) {
225 kfree(primary);
226 primary = NULL;
227 }
228 drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs);
229
230 return primary;
231 }